<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link  rel="stylesheet" href="my1.css">
</head>
<body>
<ul>
  <li id="i1">张学友</li>
  <li class="c1">刘德华</li>
  <li>郭富城</li>
</ul>
<h1 class="c1">悟空</h1>
<h1>八戒</h1>
<h1>沙僧</h1>
<h1>刘备</h1>
<input type="text">
<input type="password">
</body>
</html>